40 Proceedings of the Royal Society of Victoria. 



Genus Echi}wclathria, Carter. 



Sponge made up of a honeycomb-like mass of anastomosing, 

 flattened trabecular. Skeleton reticulate, horny, with or without 

 spicules in the tibre. Megascleres smooth, either styli or tylota ; 

 smooth echinating styli commonly present. Palmate isochelfe 

 may be present. 



Echitioclafhria favus, Carter. 



Echinoclathria favus., Carter, A.M.N.H., October, I880, p. 292. 



Echinoclathria JavKS, Ridley and Dendy, Challenger Monaxo- 

 nida, p. 160, pi. xxxi., tigs. 4, 5, ba. 



It is rather curious that this species, which would seem, from 

 Mr. Carter's original description and from the " Challenger "' 

 Collection, to be not uncommon in Bass Straits, is unrepresented 

 in Mr. Wilson's later collections. 



Echinoclathria glal>ra, Ridley and Dendy. 



Ec/iiiwclathria glabra., Ridley and Dendy, Challenger Monaxo- 

 nida, p. 163, pi. xxix., figs. 11, \\a ; pi. xxxi., tig. 2. 



This species was described from a single specimen collected by 

 the "Challenger" in Bass Straits. Mr. Wilson has added three 

 more. 



R.N. 691 (s. 7, Queenscliff Jetty) ; 696 (s. 7, Queenscliff Jetty) ; 

 707 (s. 3 ; " yellowish grey "). 



Echinoclathria arenifera, Carter". 



% HolopsaniDia la/ni/ncfavosa, Carter, A.M.N.H., March, 1885, 

 p. 212. 



Echinoclathria favus., var. arenifera, Cartel", A.M.N. H., Novem- 

 ber, 1885, p. 350. 



The sponge is honeycombed as usual ])ut intensely sandy. 

 The spicules are ditiicult to make out, apparently smooth, 

 echinating subtylostyli and slender linear spicules only. B.M. 

 d. 54, 55 and 58 all contain proper spicules, while their presence 

 is doubtful in d. 49 and 56. 



R.N. 308 (20 f; "sandy sponge colour"); 557 (x, 19 f; 

 ochraceous buff"); 698 (s. 7, Queenscliff Jetty); 830 (s. 10); 833 

 (s. 10); 849 (s. 10). 



